Envelop-sealing machine.



M. E. MAYO. ENVHLOP SEALING MAGEINE. APPLICATION FILED MAY 14, 1908.

Patnted- July; 1, 1909.

iinrrnn sta ns MAURICE E. MAYO, OF SOUTH PORTLAND, MAINE, ASSIGNOR OF ONE-HALF TO WILLIAM N. TAYLOR, OF PORTLAND, MAINE.

ENVELOP-SEALING MIACHINE b I To all whom it may concern:

Be it known that I, MAURICE E. MAYO, of

South Portland, in the county of Cumben land and State of Maine, have invented certain new and useful Improvements in Envelop-Sealing Machines, of which the following is a specification.

My invention relates to a machine for sealingenvelops and the ob ect of the in vent on is to construct a machine which will be composed of few parts, which is simple in construction, cheaply made and easily operated.

The inventlon consists of the combination and arrangement of parts as hereinafter set forth.

1 illustrate my invention by means of the accompanying drawing in which- Figure l is a section on-the line m w of Fig. 8, Fig. 2 1s a side elevation, F g. 8 is a plan and Fig. i is a detail of one of theflap to be opened closing members. Fig. 5 is a cross section ot a feeding roll showing an alternate conthe bed of sti'uction.

the machine and B B stationary side pieces In the drawing, A represents in which are located the bearings for the two first sets of feed rolls; The envelop is first placed flap down on a feed table 05 (shown only in Fig. 1) and is then seized by the initial feed rolls C and G. As here shown the u per roll 0 is of the full width of the machine but the lower roll 0 only comes in contact with the body of the envelop below the flap, leaving the latter free ownward. Flap opening devices are placed next beyond the initial feed rolls and these as here shown consist of a pair of superposed platesE and E shown as substantially of the same shape, the pldte being separated by a narrow space through which the envelop passes after the flap is the flap is effected by the edge of the lower plate which is formed at an inclination of the line of motion of the envelop. T The effect of the inclined edge is to slowly 1 press the flap upward and open it so that the envelop with the fiap extended may be drawn through the space between the plates After passing through the plates E and E, the envelop 1s seized by the intermediate Specification of Letters Patent.

Application filed May 14, 190B.

clined edge of the lower plate forcing flap open into an extended position. The 'body of the envelop is now grasped by the Patented June 1, 1909.

Serial No. 432,762.

f which seize the body of the envelop and the moistening rolls F and F both on the same arbor with the main rolls and separated therefrom by aspace.

Water is supplied to the lower roll F by a water reservoir H set on the bed of the machine. As here shown the roll runs in contact with a fibrous pad 71. held in acompartment formed by the partitions hand connected by openings with the body of the reservoir.

tiome distance beyond the intermediate feed rolls are placed the sealing rolls J J journaled in the adjustable side pieces B which are secured to the base of the'machine by bolts Z) passing through slots'b whereby the rolls may be adjusted to tighten the belts G and G which connect the two pairs of rolls F and J and F and J respectively.

The belts G and G are carried in shallow recess in the ends of the rolls so that the outer surfaces of the belts will come flush with the surfaces of the rolls andthe belts are only of sufiicient width to grasp the body of the envelop v ing the flap to be folded in before reaching the sealing rolls.

Between the intermediate rolls and the sealing rolls are placed flap closing devices which as here shown are composed of rods I, l, I and T the former being placed nearest the rolls F F and being slightly inclined from the vertical so that it will give the extended flap a slight inward motion. The other rods are placed at inclinations gradually approaching the horizontal, the rod '1 being substantially horizontal and being placed just in front of the sealing rolls J J.

Thus the flap is gradually closed in by the action of the series of rods until it reaches the sealing rolls where it is flit:

pressed down and sealed.

From what has been said the operation of my machine is obvious. The envelops with their flaps turned down but slightly loosened as they Wlll be after having been once opened,

are placed on the feed table cl and are fed oneat a time through the initial feed rolls C' C and thence between the plates E E the inthe rolls f and the flap passes between the moistening. rolls F F and the envelop is then pressed journals for the purpose ot holding t it will run through envelops of ordinary size from the belts G t". t

a yieldirn surlae carried along by the belts G G which grasp the body and allow the flap to be closed in and sea led as described.

The machine made large enough so that either large or small, the onl;- adjustment necessary being the variation 0! the position of the surtace ot' the rods l and l where the flap gctsits initial inward bend. I provide for this adjustment to suit. variations in width by makingthe rods 1 and l oblong in cross: seetionwith a stud 2 at one end and oil the center so that as the rod turned the lll'lpllljllllfl' edge will be at ditlerent. distances 1 Each of the rolls is provided with -sprin" them llt-(Ullltltt as is usual in such rolls. The surfa es of the rolls are made of some 3 yielding substance. The) may he of metal 1 with rubber vuleaninetlaurtlie outer surfaee or they may he wood with their rubber cemented or otherwise secured to the outer 5 surface all :NL'Oltlllljl to the an-iount of cos which is put into the machine.

in Fig. 5, l have shown a cross section at 5 a roll constructed with a solid l)t'3tl 7/1 and i which may he of rubber or other melding material. 1 I claim: l 1. In an envelop sealing n'iaehine, the com- 'bination of a pair of initial teed rolls, one

the flap t0 open a pair of SllPUl'lXhCd llap opening plates beyond the feed iotls having rolls beyond the opening platescomprising main rolls in line with the body of the envelop and moistening rolls in line with the flap, a pair of sealing rolls. a pair of "feeding belts connecting the internwdiate rolls and the sealing rolls and- (lap closing dev'ices between the intermediate and sealing rolls.

In an envelop sealing maehine the combination of a pair of initial feed rolls, one oi which is shorter than the other to allow the flap to open, a pair of superposed Map l opening plates beyond the feed rolls having a spactfbetween them, one of said plates having its forward edge inclined to the line of motion for gradually opening the flap. a pair of intermediate rolls beyond the UI'JtII- ing plates comprising main rolls in line with 3 the body of the envelop and nioistening rolls 1 in line with the tlap, a pair of sealing roll a pair of feeding belts connectingthe. inten mediate rolls and the sealing rolls and Hap closing devices between the intermediate and sealing rolls.

3. In an envelop sealing machine the coinbination of two pairs of rolls having c0rresponding annular reces es therein a pair of feeding belts running in said recesses and connecting the pairs of rolls, the outer surfaces of said belts being tiush with the surfaces of said rolls and means for actuating said rolls to feed the envelop t, In an envelop sealing machine the eon1- bination of a pair ot initial feed rolls one of which is shorter than the other to allow the tlap to open, a pair of superposed (lap opening plates beyond the iced rolls having a space between them. a pair of intermediate rolls beyond the opgnine' plates comprising main rolls in line with the body of the envelop and nioistening rolls in line with the flap, a pair of sealing rolls, a pair of feeding belts coimeetiug' the intermediate rolls and the sealin 'rolls and :nlaptedto grasp body of the tTITVOlOI) below the tlap and tlap closing' 'devices in 'l'ront. of said aling rolls.

a. in an envelop s aling maehinethe combination of a pair ol: initial teed rolls adapt;- ed to act on the body of the envelop below the (lap, a flap opening device beyond said teed rolls, a. pair o't intermediate feed rolls beyond the llap opening device cou'iprising main rolls in line with the body of the envelop and nioistening rolls in line with the flap, a pair of :iealin rolls, a pa r of feedin;- belts connecting the ii'itermediate rolls and the sealing rolls and ha ving their outer surlaees flush with the surfaces of the rolls and [lap closing devices between the intermediate and sealing rolls.

It. In an envelop sealing machine, the conr hination of a pair o'l feeding rolls, a pair of sealing rolls each havii'ig an annular recess therein and a pair of 't'ti-eding belts c0nneeting said rolls. running in said recesses and being lush with the outer surface of said l )ll. said belt being;- located to grasp the envelop'below the llap and llap manipulating deviees at one side of said belt.

in testimony whereof I have atlixed my signature, in presenr'e of two witness BEA! ltlCi'l l). MAYO. 

